Will my amp power these the Beyerdynamic DT990s?

I have the fiio e06 amp, and am looking to purchase the DT990 pros by Beyerdynamic (250 ohms). With this amp plugged into my iphone or pc, will there be enough drive to use these cans at full potential? Or should I consider some with less power; the Audio technica ad990xs for example? Thanks in advance!

I have the fiio e06 amp, and am looking to purchase the DT990 pros by Beyerdynamic (250 ohms). With this amp plugged into my iphone or pc, will there be enough drive to use these cans at full potential? Or should I consider some with less power; the Audio technica ad990xs for example? Thanks in advance!

(I'm new and can't post links to said items; sorry!)

The FiiO E6 will be about maxed out trying to drive the DT990 250-Ohm headphones.